Audiphone



C. FENSKY AUDIPHONE Original Filed Oct. 4, 1923 Patented Oct. 13, 1925UNITED STATES PATENT QHARLES FENSKY. OF ST. LOUIS, MISSOURI.

AUDIPHONE.

Application filed October 4, 1923. Serial No. 666,477. Renewed May 3,1925.

To all whom it may concern:

Be it known that 1, CHARLES E .XsKY, a citizen of the United States, andresident of the city of St. Louis, and State of Missouri, have inventedcertain new and useful Improvements in Audiphones, of which thefollowing is a specification containing full, clear, and exactdescription, reference be ing had to the accompanying drawings, forminga part thereof.

My invention relates to lmPIOYQIUPJitE in audiphones and has for itsprimary object a device for improving the hearing, which is small enoughto be inserted in the ear, and when in position will not attract a greatdeal of unnecessary attention to the wearer as the present type ofdevices do in which head-phones and batteries or speaking trumpets areemployed.

A further object is to construct an audiphone which is so constructedthat when it is placed in position within the ear it will in connectionwith the ear form a receiving chamber to catch sound waves which arethen transferred into .the ear,

In the drawings Fig. 1 is a. side elevation of the device viewing thesame from the inside;

Fig. 2 is a side elevation viewing it from the outside;

Fig. 3 is an enlarged view of Fig. 2.

Fig. at is an edge view viewin the same in the direction of the arrow inFig. 3;

Fig. 5 is a vertical section taken on the line 5-5 of Fig. 4, and

Fig. 6 is a view showing my device in position within an ear.

In the construction of my device I employ a hollow curved member 7 whichterminates at one end in a hollow globular or ball shaped member 8.Projecting at right angles to the curved member 7 and formed integralwith the ball 8 is a tapered hollow tube 9, which is provided on itsouter end with a head 10. The member 7 is preferably circular in crosssection throughout the major portion of its length. Its free end howeveris flattened so as to be substantially elliptical in cross section. Theflattened portion of the member 7 is provided with an opening 11, whichopening is on the same side of the device as the tapered hollow member9. This is for the purpose of cansing the opening to lie close to theinside of the outer ear so as to reventa sudden inrush of air due to winand to eliminate as much as possible the entrance of dust and lioreignmatter.

Formed on the outside oi the iii-ember T a web this r. en ertcndsforward and is provided with a bent-over upper portion l3. Thisbent-over upper portion in connection it the nictirbcr T and the insideoi the ear iainber into which the sound received. In this way it isimpossible tor any sound waves to sirihe the member T and be deflectedoutwardly. but all waves which reach the chamber formed as aforesaidwill be directed into the opening 11, then through the passage way 1%'t'ornied in the member 7, from thence into the hollow ball 8 and fromthere on through the tapered tube 9 into the car. i

A. portion of the passage i in the member T is corrugated as at 15.These co..-:ugutions extend only partially around the passage and it isbelieved that by placing these corrugations within the passage they tendto amplify the sound by can: the sound waves to enter the car moresharply than it the 'iassage were smooth. I

It will be noted that the portion 13 ex tends forward of the n'ieniber'7 and is also slightly downwardly inclined. This for the purpose ofpreventing the sound waves from rising upward and escaping in that way.

The method of applying my device is as follows The tapered tube 9 isinserted in the ear passage and the device then pushed into the caruntil it assumes the position shown in Fig. 6. This causes the curvedmember 7 to lie closely against the inside of the ear with the opening1]. turned toward the head and the web 12 toward the outside of the ear.In this position as afore stated the web 12 is inside of the outer earand the turned-over portion 13 together with the ball 8 forms a soundreceiving chamber which is opened along its forward end only. All soundwaves which enter this chamber have only one means of escape and that isthrough the opening 11 into the interior of the member 7 from whencethey are directed to the interior ear. In this way a great deal moresound is caught by my device than would be possible if the web 12 wereomitted.

It will also be noted that there are no sharp turns for the sound wavesto make; thereby distorting of the sound is prevented.

(ill

This device is an improvement on an application filed by me May 2, 1923,Serial #636,067 for improvements in audiphones.

Havin fully described my invention, what I c aim is 1. An audiphonecomprising a hollow curved member having an opening in one side adjacentone end, a hollow globular portion formed integral with the other end ofsaid member, a tapered tubular member formed integral with the globularmember and projecting therefrom at right angles to the curved member,and a web formed integral with the curved member and globular member onthe side opposite the tube for forming in connection with the inside ofthe ear, a chamber for the reception of sound Waves.

An audiphone comprising a hollow curved member having an opening in oneside adjacent one end, a hollow globular portion formed integral withthe other end of said member, a tapered tubular member formed integralwith the globular member and projecting therefrom at right angles to thecurved member, and a series of corrugations formed in a portion of theinterior of the hollow curved member, and a web formed integral with thecurved member and globular member on the side opposite the tube forforming in connection with the inside of the ear, a chamber for thereception of sound waves.

3. An audiphone comprising a hollow curved member having an opening inone 35 side adjacent one end, a ho lowglobular portion formed integralwith the other end of said member, a tapered tubular member formedintegral with the globular member and projecting therefrom at rightangles to the-curved member, and a we formed integral with the curvedmember and globular member on the side opposite the tube for forming inconnection with the inside of the ear a chamber for the reception ofsound waves, said web projecting beyond the end of said curved memberand provided with a turned-over portion.

4. An audiphone comprising a hollow curved member having an opening inone side adjacent one end, a hollow globular portion formed integralwith the other end of said member, a tapered tubular member formedintegral with the globular member and projecting therefrom at rightangles to the curved member, and a series of corrugae tions formed in aportion of the interior of,

the hollow curved member, and a web formed integral with the curvedmember and globular member on the side opposite the tube for forming inconnection with the inside of the ear, a chamber for the reception ofsound waves, said web projecting beyond the end of said curved memberand provided with a turned-over portion.

In testimony whereof I have signed my name to this specification.

CHARLES FENSKY.

